<!DOCTYPE HTML>
<html>
   <head>
      <meta charset="UTF-8">	
      <script type="text/javascript">
		
         var db = openDatabase('mydb', '1.0', 'Test DB', 2 * 1024 * 1024);
         var msg;
			
         db.transaction(function (tx) {
            tx.executeSql('CREATE TABLE IF NOT EXISTS LOGS (id unique, log)');
            tx.executeSql('INSERT INTO LOGS (id, log) VALUES (1, "W3Cschool教程")');
            tx.executeSql('INSERT INTO LOGS (id, log) VALUES (2, "www.w3cschool.cn")');
            msg = '<p>数据表已创建，且插入了两条数据。</p>';
            document.querySelector('#status').innerHTML =  msg;
         });

         db.transaction(function (tx) {
            tx.executeSql('SELECT * FROM LOGS', [], function (tx, results) {
               var len = results.rows.length, i;
               msg = '<p>查询记录条数: ' + len + '</p>';
               document.querySelector('#status').innerHTML +=  msg;
					
               for (i = 0; i < len; i++){
                  msg = '<p><b>' + results.rows.item(i).log + '</b></p>';
                  document.querySelector('#status').innerHTML +=  msg;
               }
            }, null);
         });
			
      </script>
		
   </head>
	
   <body>
      <div id="status" name="status">状态信息</div>
   </body>
	
</html>